PROFLEX 33 sq ft Standard 28 mil Flooring Underlayment Home Improvement easy view oil sight gauge easy view oil sight gauge The California Office of Environmental Health Hazard Assessment (OEHHA) administers the Proposition 65 program and publishes the listed chemicals Feet) 33 Grade Standard Collection Name N A Thickness Unit of Measure Mils Thickness 28 R Value per Inch 0 CA Residents: Prop 65 Warning(s) No UNSPSC 30161700 Length (Feet) 75 Construction Type Poly film Square Foot Coverage 0 Width (Feet) 4 Coverage Area (Sq Rubber seam tape is a seaming tape for use with PROFLEX® elastometric membranes When used under seams RST will form a seamless monolithic sheet over the substrate